Broadband electromagnetic analysis of compacted kaolin
Autor: | Bore, Thierry, Wagner, Norman, Delepine Lesoille, Sylvie, Taillade, Frédéric, Six, Gonzague, Daout, Franck, Placko, Dominique, Cai, Caifang, Scheuermann, Alexander |
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Přispěvatelé: | Laboratoire commun de métrologie LNE-CNAM (LCM), Laboratoire National de Métrologie et d'Essais [Trappes] (LNE )-Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA), Département Composants et Systèmes (IFSTTAR/COSYS), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université de Lyon-PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Lille Nord de France, Département Mesure, Auscultation et Calcul Scientifique (LCPC/MACS), Laboratoire Central des Ponts et Chaussées (LCPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Groupe d'Electromagnétisme Appliqué (GEA), Université Paris Nanterre (UPN), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Ouest (Cerema Direction Ouest), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Laboratoire des signaux et systèmes (L2S), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), PRES Université Lille Nord de France-PRES Université Nantes Angers Le Mans (UNAM)-Université de Lyon-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR) |
Rok vydání: | 2016 |
Předmět: |
Materials science
Suction Applied Mathematics 0211 other engineering and technologies Compaction 02 engineering and technology Mechanics Conductivity Physics::Classical Physics 01 natural sciences 6. Clean water Physics::Geophysics 010309 optics Soil structure Hydraulic conductivity Electrical resistivity and conductivity 0103 physical sciences Compressibility Porosity [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing Instrumentation Engineering (miscellaneous) ComputingMilieux_MISCELLANEOUS 021101 geological & geomatics engineering |
Zdroj: | Measurement Science and Technology Measurement Science and Technology, 2017, 28 (1), ⟨10.1088/1361-6501/28/1/014016⟩ Measurement Science and Technology, IOP Publishing, 2017, 28 (1), ⟨10.1088/1361-6501/28/1/014016⟩ |
ISSN: | 1361-6501 0957-0233 |
Popis: | The mechanical compaction of soil influences not only the mechanical strength and compressibility but also the hydraulic behavior in terms of hydraulic conductivity and soil suction. At the same time, electric and dielectric parameters are increasingly used to characterize soil and to relate them with mechanic and hydraulic parameters. In the presented study electromagnetic soil properties and suction were measured under defined conditions of standardized compaction tests. The impact of external mechanical stress conditions of nearly pure kaolinite was analyzed on soil suction and broadband electromagnetic soil properties. An experimental procedure was developed and validated to simultaneously determine mechanical, hydraulic and broadband (1 MHz-3 GHz) electromagnetic properties of the porous material. The frequency dependent electromagnetic properties were modeled with a classical mixture equation (advanced Lichtenecker and Rother model, ALRM) and a hydraulic-mechanical-electromagnetic coupling approach was introduced considering water saturation, soil structure (bulk density, porosity), soil suction (pore size distribution, water sorption) as well as electrical conductivity of the aqueous pore solution. Moreover, the relaxation behavior was analyzed with a generalized fractional relaxation model concerning a high-frequency water process and two interface processes extended with an apparent direct current conductivity contribution. The different modeling approaches provide a satisfactory agreement with experimental data for the real part. These results show the potential of broadband electromagnetic approaches for quantitative estimation of the hydraulic state of the soil during densification. |
Databáze: | OpenAIRE |
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